<div class="panel panel-default">
    <div class="panel-heading">
        <h4><b>还没登陆？</b></h4>
    </div>
    <div class="panel-body">
        <a href="#" class="btn btn-default">现在注册</a> 已注册请
        <a href="{:U('user/login')}" class="">登入</a>
    </div>
</div>